@Exdcarca:
Alt+Z -> Frame strata are never or bad used by my mod, so I should check that.
WOW UI Scale -> what do you mean ? having same size than default wow button size ? having size which follow size of action button (which could change with the help of addons)
have a Size Configuration -> this could happend when I will have no feature to implements and no bug to correct.
Alt+Left Mouse button -> Alt+Shift+Left Mouse button
large reduction os my FPS -> Versions after 3.0.0 look at event to update timers. Version before update timers on each update frame call. So if you have many event sent (because many ppl around you) the new process may be slower.
Memory resource should be lower than before (I use 21 frames per visible button in TM2 and only 4 in 3.x.x and 1 in 4.x.x). But I also use candybar, libsink and ace libraries in version after 3.0.0 so this use memory).
Processor resources are difficult to evaluate, but I try to do the less action possible.

I also got a chance to raid with this the last couple nights and noticed a huge frame rate drop as soon as we engaged a mob. Is it still checking to see how many people are in range of a totem?

The first night the raid had about 15 people in it and I got through a few fights before I had to disable it. The second night we had 40 people and I was getting maybe 1 fps and couldn't even get to the mob before it was dead. The fps drop seemed to be tied to how many people were in the group.

I also noticed with smaller groups that I get tiny hiccups in frame rates when the totems pulse.

Let me know if I can provide any more information for you. I love this addon and hope to be able to use it again.

I usually drop strength of earth, windfury, mana spring, and flametongue(in that order.) It started as soon as I dropped a totem and got worse as I dropped more. I didn't get far enough to try any other combinations.

I need to be sure that the raid buff check is responsible.
You should make bench (with addon / whitout addon difference of fps) (with only non buff totem / with only buff totem difference of fps).
If the problem is not tracked I will not work on it (I could think that problem come from your old computer).

Resizing definitely should have priority. My UI is pretty minimalistic and these are without a doubt the largest (obscenely so) graphics on my UI...to the point where it's unusable until this feature is added. 101 of addon making is offering a more customizable UI so will keep this one on hold until it's available.

Great idea, and will be a fantastic replacement for Totemus...when it offers more customization...

The size on 4.3.0 is much better! closer to the pre 3.0 size. As far as memory usage, I'll be able to tell Tuesday when I raid again. I too noticed a few lock up last tuesday in sunwell, and noticed Tm at the top, above recount most of the time, and that's hard to achieve! =P